Correct Answer: A. x ≤ 2, x ≥ 3

Correct Answer: B. \(\frac{1}{3}\)

Explanation

Benefits of citizens active participation in political process:

(i)Psychological satisfaction:The involvement of people in political activities gives them psychological relief in spite of the fact that not all their demands have been met by the government.

(ii) Institutionalization of a responsible government. Popular participation helps to institutionalize a responsive and responsible government.

(iii) Mass contribution to the political system: Mass participation takes various forms. It enable the citizens to contribute in various ways to the political development of the country.

(iv)Legitimacy of elected government: Popular participation helps to give legitimacy to the government, whether it is the government in power or that which will be elected.

(v)Fulfillment: Mass participation helps to promote in individuals a sense of belonging, self worth, self confidence and even relevance which help them to become fulfilled.

(vi)Political stability: It promotes political stability in a country. The government will be able to operate without many problems from the citizens.

(vii)Political awareness and education:Popular mass participation gives opportunities for civic education and the acquisition of civic virtues necessary in a democratic state. The electorate become better educated politically.

(viii) Good governance:Popular participation of citizens in government ensures good governance and builds confidence in citizens.

(ix)National development:There will be rapid socio-economic development if citizens participate in electoral/political process.

(x)International Recognition and Respect:Active participation of the people in the political process earns the government and people of the state international recognition and respect.

Correct Answer: A. Poisonous substances in the body are converted into harmless substances

Correct Answer: D. 20m

Correct Answer: C) golgi bodies

Explanation

The question is asking which organelle is not directly involved in the process of cell division. The four options provided are centromere, microtubules, golgi bodies, and spindle apparatus. Centromere is a structure that connects the two sister chromatids during cell division. Microtubules are important components of the spindle apparatus, which is responsible for separating the sister chromatids. The spindle apparatus is made up of microtubules and is directly involved in the cell division process. The correct answer is option C: golgi bodies. Golgi bodies are responsible for modifying, sorting, and packaging proteins and lipids for transport to their final destinations within or outside the cell. While they are important for the overall functioning of the cell, they are not directly involved in the process of cell division. It is important to understand the roles and functions of different organelles within the cell, as they all work together to maintain the viability and functioning of the cell. For more information, please see the recommended textbooks.

Correct Answer: (B) ordered

Correct Answer: B. Oil-drop experiment

Correct Answer: B. W

Explanation

(a) Advantages and disadvantages of biogas as asource of farm power

Advantages

- It reduces environmental pollution

- It is easily controlled/easy to operate

- Animal dung is cheap

- Provides economic value to animal wastes/provides proper use of animal wastes

- It can be used for different farm operations like heating the brooder house, drying etc

Disadvantages

• It requires high technical know-how
• It is not a common source of farm power
• Its use is limited to areas where there is abundance of animals
• it is expensive to set up and maintain

(b) Simple farm tool

Some tools used in the farm are:

1. Cutlass

2. Hoe

3. Garden fork

4. Hand fork

5. Trowel

6. Rake

7. Shears

8. Secateurs

9. Sprayers

10. Watering can

11. Sickle

12. Axe

13. File

14. Head pan

15. Wheel barrow

16. Spade

17. Shovel

18. Mattock

19. Mallet

20. Tapping knife

21. Dibber

22. Budding knife

(c)Common storage structures and processing structures found on farmstead in West Africa

Storage structures

• - Barns
• - Bins
• - Cribs
• - Silos
• - Drums
• - Cages
• - Bags
• - Baskets
• - Rhumbu
• - Farm store/warehouse
• - Underground pits
• - Platforms
• - Cold room/cold store

Processing structures

• - Abattoir
• - Milk pasteurizing shed
• - Fish or meat smoking shed
• - Rice mill
• - Cassava mill
• - Oil mill(for oil crops)
• - Curing house for tobacco
• - Shelling barn

(d)Explanation ofdenitrification

This is the process whereby soil nitrates are converted to nitrogen gas, nitric oxide or nitrous oxide through the activities of denitrifying bacteria

(e) Description of soil components

(i) Mineral Matter: Form the solid parts of the soil which are derived from weathered rocks

• - Represents 45% per volume of a soil sample
• - Holds water and air for plant use
• -Source of plant nutrients
• -Provides anchorage to plants

(ii) Organic matter:

• Represents a mixture of plant and animal materials at different stages of decomposition in the soil
• Represents 5% per volume of a soil sample
• Improve soil structure/binds soil particles together
• Source of plant nutrients after decomposition